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AUSCERT External Security Bulletin Redistribution
ESB-2017.1063
NSS vulnerabilities
28 April 2017
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: libnss3
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Access Privileged Data -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Provide Misleading Information -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2017-5461 CVE-2016-2183
Reference: ASB-2017.0042
ASB-2017.0028
ESB-2016.2239.2
ESB-2016.2238
Original Bulletin:
http://www.ubuntu.com/usn/usn-3270-1
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Ubuntu Security Notice USN-3270-1
April 27, 2017
nss vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 17.04
- - Ubuntu 16.10
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in NSS.
Software Description:
- - nss: Network Security Service library
Details:
Karthik Bhargavan and Gaetan Leurent discovered that the DES and Triple DES
ciphers were vulnerable to birthday attacks. A remote attacker could
possibly use this flaw to obtain clear text data from long encrypted
sessions. This update causes NSS to limit use of the same symmetric key.
(CVE-2016-2183)
It was discovered that NSS incorrectly handled Base64 decoding. A remote
attacker could use this flaw to cause NSS to crash, resulting in a denial
of service, or possibly execute arbitrary code. (CVE-2017-5461)
This update refreshes the NSS package to version 3.28.4 which includes
the latest CA certificate bundle.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 17.04:
libnss3 2:3.28.4-0ubuntu0.17.04.1
Ubuntu 16.10:
libnss3 2:3.28.4-0ubuntu0.16.10.1
Ubuntu 16.04 LTS:
libnss3 2:3.28.4-0ubuntu0.16.04.1
Ubuntu 14.04 LTS:
libnss3 2:3.28.4-0ubuntu0.14.04.1
This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart any applications
that use NSS, such as Evolution and Chromium, to make all the necessary
changes.
References:
http://www.ubuntu.com/usn/usn-3270-1
CVE-2016-2183, CVE-2017-5461
Package Information:
https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.17.04.1
https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.16.10.1
https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.16.04.1
https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.14.04.1
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